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Creating Linked List

deshdeep divakar
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Joined: Apr 19, 2004
Posts: 91
Hi,
Can anybody tell me how can I implement Linked List without
using util class


"Do not be afraid of going slow, be afraid of standing still"
Barry Gaunt
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Joined: Aug 03, 2002
Posts: 7729
Sorry this is not in the scope of SCJP so it's now here.
[ November 02, 2004: Message edited by: Barry Gaunt ]

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Getting someone to think and try something out is much more useful than just telling them the answer.
Stan James
(instanceof Sidekick)
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Joined: Jan 29, 2003
Posts: 8791
A singly linked list has a pointer from each element to the next. Let's make a Node class that holds a pointer to the next Node and some object that you put there:

We could build a list like this (just typing, not compiling or testing!)

When I first started making these things, I had to draw each new node on a piece of paper and draw arrows for the "next" pointers. After a while it made sense.

For more fun, think about removing a node in the middle, or the first node. If you really think that was fun, come back and we'll talk about doubly linked lists!


A good question is never answered. It is not a bolt to be tightened into place but a seed to be planted and to bear more seed toward the hope of greening the landscape of the idea. John Ciardi
 
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subject: Creating Linked List